Seager (back) is beginning a rehab assignment with Double-A Frisco on Tuesday, Jeff Wilson of AllDLLS.com reports.
The veteran shortstop progressed to "higher-volume" live batting practice the past few days, clearing the way for him to see his first game action in nearly a month due to back inflammation. Seager may not need much action in the minors before rejoining the Rangers, so he could be back from the injured list before the end of the week.